That link is for
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Breast physics is by mastatok, it was released for free, but mastatok took all his files down and quit the scene a couple years back.
I will say though that the current and most up to date version of breastjig by lola69 on renderosity is actually pretty decent. (Earlier versions of it were worse though, so old copies of breastjig by lola69 are actually not that useful).
edit:
To clear things up, as to what the guy in the OP of this thread was asking for. mastatok was a user on the daz3d forums, he posted in this thread on this page
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and he posted this:
"
Here is the updated download link for these scripts.
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Breast Physics for G8F v1.01
Breast Physics for G3F v1.02
Breast Physics for G2F v1.02
Breast Physics for Genesis v0.65
All these scripts require the following breast control morphs for each figure.
- Breast Control Genesis 8 Female(s)
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- Breast Control Genesis 3 Female(s)
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- Breast Control Genesis 2 Female(s)
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- Glute and Breast Movement for Genesis
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My script calculates the force applied on the figure’s breasts in each frame in each of xyz axis, simulates the vibration based on the technique called seismic response analysis, and then assigns morph values that represent the vibration. If the body moves in a complex way, the breasts vibration will equally be complex as is the case with a real human being.
You can set various parameters to change how the breasts vibrate, and these parameters are explained in detail in the accompanying readme file.
Enjoy! Don’t forget to share your video if you create a good one!
Post edited by masatok0606_1efebee4e7 on May 2018
"
None of those links work though because sometime in late 2018 slash early 2019 masatok vanished and took his links down.
As far as I know mastatok's script did the best automatic mathematical simulation especially for motions that were in masatok's own words "complex". Most of the other scripts I've seen mentioned in this thread and elsewhere are pretty decent in terms of simple animations, for simple repetitive body motions (which is pretty good for a short sex gif, but like I said before, is a bit lacking for walking/running/jogging/dancing/etc.
edit2: I am somewhat hopeful though about finding a way to make spring bones work (I'm a novice myself though obviously.)